The Racing Pigeons Supplies Store: Dr. Brockamp C M K 500 ml (Carnitin Magnesium Complex). Racing Pigeons Supplies The main ingredient of Carni Speed is L carnitine. This substance, which is similar to a vitamin, plays a central role in the metabolism of pigeons. With a dosage of 10 ml litre drinking water ACE PIGEONS Bird Supply Store Boost IT Pigeon Supplement Powder, 500GM, Increases Flight Performance, L Carnitine, B Vitamins, Creatine : Amazon.in: Pet Supplies Oropharma Carmine Mega Forte + L Carnitine 250 ml